Remove flavors from auth module

app/build.gradle

app/src/fdroid/java/org/futo/circles/di/FlavorModule.kt

app/src/gplay/java/org/futo/circles/di/FlavorModule.kt

...ircles/subscriptions/google/GoogleSubscriptionsManager.kt

...uto/circles/subscriptions/google/ProductDetailsMapping.kt

app/src/gplay/res/values/strings.xml

app/src/main/res/values/strings.xml

auth/build.gradle

...circles/auth/subscriptions/SubscriptionManagerProvider.kt

auth/src/fdroid/res/values/strings.xml

...circles/auth/subscriptions/SubscriptionManagerProvider.kt

.../feature/sign_up/sign_up_type/SelectSignUpTypeFragment.kt

...e/sign_up/subscription_stage/SubscriptionStageFragment.kt

auth/src/main/res/values/strings.xml

core/src/fdroid/AndroidManifest.xml

core/src/fdroid/res/values/strings.xml

core/src/gplay/AndroidManifest.xml